Kusabana Ryouta is a normal highschool boy, except that he always wears a full body dog suit and never takes it off.<br />Things were just like always until he accidentally drops the bag of the girl he likes, and her sports pants fall out. And just when he picked them up - wondering how they smelled -, the new homeroom Teacher Kizawa Ayame AKA Ayane-Chan catches him in the act. Pleading that he will do anything if she doesn't tell anyone about this, she agrees, but asks him: "In exchange will you let me sniffle your body?".